PET Bottle Production

Today, polyethylene (PET) plastic is widely used as packing material in many industries. Especially in the food industry, PET containers come in many forms and shapes, some of which impose quite high demands on the production process.

The Challenge

Injection blow molding has established itself as the process of choice for the manufacture of hollow bodies such as PET bottles, for example. The temperature of the plastic parison is an essential factor in the production process. The preform parison is heated to about 250°C, inflated to its final shape by means of compressed air in the blow mould, and then normally transferred directly to the filling station.

If the parison is heated too long or too shortly during the first step, the material won’t have optimum properties for further processing. For this reason a controlled heat-up process is indispensable. The use of a thermal imaging system is a major contribution to achieving this. It not only allows you to optimize your production process but also to realize cost savings on energy and materials.